Security advisory

{
  "id": "9721f175578ae93269a792095516151e2a326af70a3326c1cde7ee9a4287edf5",
  "url": "https://osv.dev/vulnerability/CVE-2025-20128",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2025-20128",
    "summary": "A vulnerability in the Object Linking and Embedding 2 (OLE2) decryption routine of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to an integer underflow in a bounds check that allows for a heap buffer overflow read. An attacker could exploit this vulnerability by submitting a crafted file containing OLE2 content to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the ClamAV scanning process, resulting in a DoS condition on the affected software. For a description of this vulnerability, see the . Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.",
    "evidence": "osv:CVE-2025-20128",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-20128",
      "aliases": [
        "CVE-2025-20128"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/cisco-talos/clamav",
              "type": "GIT",
              "events": [
                {
                  "introduced": "09f373f82ad0978e267cc9b795aa93d7f8e8b7d2"
                },
                {
                  "fixed": "9a2c6425ad4c5a2a38bf641c8e4631243805dcd1"
                },
                {
                  "introduced": "2a21451e1f3585ac99cd15c3c06371fa478dfad1"
                },
                {
                  "fixed": "98882f5f019ded3b96bacc17a9d1d65fb96dd686"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:clamav:clamav:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.0.0"
                      },
                      {
                        "fixed": "1.0.8"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:clamav:clamav:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.1.0"
                      },
                      {
                        "fixed": "1.4.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "clamav-1.4.1",
            "clamav-1.0.7",
            "clamav-1.4.0",
            "clamav-1.0.6",
            "clamav-1.4.0-rc",
            "clamav-1.3.0",
            "clamav-1.0.5",
            "clamav-1.3.0-rc2",
            "clamav-1.3.0-rc",
            "clamav-1.0.4",
            "clamav-1.2.0",
            "clamav-1.0.3",
            "clamav-1.0.2",
            "clamav-1.2.0-rc",
            "clamav-1.1.0",
            "clamav-1.0.1",
            "clamav-1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-20128.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:53.240341249Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2025/09/msg00006.html",
        "https://blog.clamav.net/2025/01/clamav-142-and-108-security-patch.html",
        "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-ole2-H549rphA"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:cisco:secure_endpoint:*:*:*:*:*:linux:*:*",
              "cpe:2.3:a:cisco:secure_endpoint:*:*:*:*:*:macos:*:*",
              "cpe:2.3:a:cisco:secure_endpoint:*:*:*:*:*:windows:*:*"
            ],
            "vendor_product": "cisco:secure_endpoint",
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "1.24.4"
                  },
                  {
                    "fixed": "1.25.1"
                  },
                  {
                    "fixed": "7.5.20"
                  },
                  {
                    "introduced": "8.0.1.21160"
                  },
                  {
                    "fixed": "8.4.3"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:a:cisco:secure_endpoint_private_cloud:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "cisco:secure_endpoint_private_cloud",
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "4.2.0"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-20128",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 437882,
  "published_at": "2025-01-22T17:15:12.583+00:00"
}